63158591 has 2 divisors, whose sum is σ = 63158592. Its totient is φ = 63158590.

The previous prime is 63158581. The next prime is 63158597. The reversal of 63158591 is 19585136.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63158591 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63158597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31579295 + 31579296.

It is an arithmetic number, because the mean of its divisors is an integer number (31579296).

Almost surely, 2^63158591 is an apocalyptic number.

63158591 is a deficient number, since it is larger than the sum of its proper divisors (1).

63158591 is an equidigital number, since it uses as much as digits as its factorization.

63158591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 38.

The square root of 63158591 is about 7947.2379478659. The cubic root of 63158591 is about 398.2393260221.

The spelling of 63158591 in words is "sixty-three million, one hundred fifty-eight thousand, five hundred ninety-one".